package lab02.Test06;

/**
 * Created by 李晓容 on 2017/10/15.
 */
public class Circle {
    public static void main(String[] args) {

    }
    double reduis;
    double area(){
        return 3.14*reduis*reduis;
    }
    double perimeter(){
        return 2*3.14*reduis;
    }

}
